PRO-PLUS® Trench Drains Josam revolutionized the drainage industry with the PRO-PLUS® Trench Drain System. It's manufactured using glass-fiber reinforced polyester (GRP) pressed from sheet molding compound (SMC), which is a composite of polyester resin, mineral fillers, and glass -fiber mats. SMC is a tried and tested GRP material with extremely high strength and dimensional stability. Learn more here Filter by 100 PRO-SNAP® Grates Load Class A Load Class C Load Class F 100 Locking Bar/Bolt Down Grates Load Class A Load Class C Load Class E Load Class F 100-GSS-A-PS – Galvanized Slotted Pro-Snap Grate, ADA/HP, Load Class "A" 4" Width 100-HDPE-A-PS – HDPE Perforated Pro-Snap Grate, 1/2 Meter, Load Class "A" 4" Width 100-SSS-A-PS – SS Slotted Pro-Snap Grate, ADA/HP, 1/2 Meter, Load Class "A" 4" Width
